Lase Ultrasonic Web Stiffness tester

Tim Patterson, Ph.D., IPST at Ga Tech

关键词: FIBERS;    FILLERS;    FLEXIBILITY;    LASERS;    MANUFACTURERS;    MANUFACTURING;    PRODUCTION;    REFINING;    ULTRASONIC WAVES;    VELOCITY paper stiffness;    laser ultrasonics;    real-time testing;   

DOI  :  10.2172/945369
RP-ID  :  Final Project Report
PID  :  OSTI ID: 945369
Others  :  Other: Final Report-Deliverable No, 3
Others  :  TRN: US200907%%72

美国|英语

来源: SciTech Connect

【 摘 要 】

The objective is to provide a sensor that uses non-contact, laser ultrasonics to measure the stiffness of paper during the manufacturing process. This will allow the manufacturer to adjust the production process in real time, increase filler content, modify fiber refining and as result produce a quality product using less energy. The sensor operates by moving back and forth across the paper web, at pre-selected locations firing a laser at the sheet, measuring the out-of-plane velocity of the sheet then using that measurement to calculate sheet stiffness.